/Engine/Source/Developer/Localization/Public/LocTextHelper.h
Given some source text, work out which text is our current "best" translation (eg, when compiling to LocRes).
void GetRuntimeText ( const [FString](API\Runtime\Core\Containers\FString) & InCulture, const [FLocKey](API\Runtime\Core\Internationalization\FLocKey) & InNamespace, const [FLocKey](API\Runtime\Core\Internationalization\FLocKey) & InKey, const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FLocMetadataObject](API\Runtime\Core\Internationalization\FLocMetadataObject) > InKeyMetadataObj, const [ELocTextExportSourceMethod](API\Developer\Localization\ELocTextExportSourceMethod) InSourceMethod, const [FLocItem](API\Runtime\Core\Internationalization\FLocItem) & InSource, [FLocItem](API\Runtime\Core\Internationalization\FLocItem) & OutTranslation, const bool bSkipSourceCheck ) const